3759713domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = smallest odd m such that (m^n + (m+2)^n)/2 is prime.at n=20A121923Primes of the form x^2 + y^2 with x > y such that x^2 - y^2 is a square and x^4 + y^4 is a prime.at n=31A282867Prime numbersat n=267363